@Bubbles1st @unicornpower I exclusively breastfed my first up to 1 year. (Well, 11.5 months as I had to travel with work... but same, same.)
I had a huge love/hate relationship with it.
I felt proud that I persevered and she didn't need formula. But man, the first six weeks were hell. I used to cry every time she latched on as it hurt so much. Then when she was fussing and cluster feeding, I felt like a dairy cow having to feed her every 5 minutes.
She was a pain to feed in public once she got to being about 4 months as she was waaay too interested in everything else, so basically I would spray milk everywhere whilst she jumped on and off. She had jaundice in her early days and the hospital told me she had to have 20 mins on each side at every feed and I used to fight and fight her to have that much because she was always done after 10 mins.
(I now realise that's BS and babies take what they need. Mine are quick feeders and generally don't latch on for hours at every feed! But also, they are hungrier at some feeds than others, just like us!)
But, expressing saved me. She had 1 feed a day that was a bottle and that used to make me feel more human. I didn't have to whop my boobs out or hubby could do it. Plus, I could go out alone knowing that she wouldn't starve without me, which made me feel waaay less guilty.
Second baby, my attitude is so different. I'm like "thank god I haven't got to fiddle with formula and making milk up... I just flap a boob out and away she goes!" I don't stress about how much or how long she feeds for and I can see that this time, I'll easily make it to the year. But my boobs are definitely far more hardened to the task this time! It doesn't hurt remotely.
Have you considered expressing? Or if you struggle to express, giving one formula feed a day to give yourself a break? First time, I told myself, "get to six weeks" and then I set myself the task of 12 weeks... and by then, by her dropping a couple of feeds and having a bottle a day, it felt much easier. Once they get to 6 months, it gets easier again as you bring food in and so they need less milk. By 12 months, my eldest was only having boob at wake up and bedtime, she then had expressed at nursery.
But, whatever you do, don't feel like you've failed. Change the mindset from stopping early to thinking "I've breastfed for 6 weeks, how amazingly have I done!" and take each day at a time. I would've used formula if I had struggled to express as I needed the freedom of someone else being able to feed!